CVE-2021-47733
Medium
Description
CMSimple 5.4 contains a cross-site scripting vulnerability that allows attackers to bypass input filtering by using HTML to Unicode encoding. Attackers can inject malicious scripts by encoding payloads like ')-alert(1)// and execute arbitrary JavaScript when victims interact with delete buttons.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Cmsimple
PublishedDec 23, 2025
First seenDec 23, 2025
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cmsimple cmsimple | 5.4 | — |
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